AD7880 is a high speed, low power, 12-bit A/D converter which operates from a single +5 V supply. It consists of a 3 µs track/hold amplifier, a 12 µs successive-approximation ADC, versatile interface logic and a multiple-input-range circuit. The part also includes a power save feature.
The AD7880 is a high‑speed, low‑power 12‑bit analog‑to‑digital converter that operates from a single +5 V supply. It offers three selectable input ranges (0‑5 V, 0‑10 V, and ±5 V) and a maximum throughput rate of 66 kHz, making it suitable for battery‑powered portable systems, DSP, speech recognition, high‑speed modems, and instrumentation.
The datasheet details electrical specifications, timing characteristics, pin functions, ordering information, and recommended offset and full‑scale adjustment procedures. Dynamic performance parameters such as SNR, THD, and IMD are also provided for signal‑processing applications.
| Resolution | 12 bits |
|---|---|
| Signal‑to‑Noise Ratio | 70 dB min |
| Total Harmonic Distortion (THD) | -80 dB typ |
| Conversion Time | 12 µs max |
| Power Consumption (Normal) | 25 mW typ |
| Power Consumption (Power‑Save) | 2 mW typ |
| Input Voltage Range (Unipolar) | 0 V to +5 V, 0 V to 10 V |
| Input Voltage Range (Bipolar) | ±5 V |
| Throughput Rate | 66 kHz |
The AD7880 can achieve a throughput rate of 66 kHz.
It supports three user‑determined input ranges: 0 V to +5 V, 0 V to 10 V, and ±5 V.
The maximum conversion time is 12 µs.
In power‑save mode the device consumes about 2 mW typical.